To become more positive, surround yourself with positivity energy and avoid environments with lower energies.
Have you ever noticed that when you enter a room with a bunch of people, you can instantly feel the energy of the environment? Whether the energy is positive or negative, your mood is very likely to get influence…d by it. Each and every interaction we have with the outside world influences our mind. The mind turns relatively negative when in the midst of negative energy, and it turns relatively positive when in the midst of positive energy.
Read more>> http://joannewellington.wordpress.com/2011/07/17/try-to-avoid-environments-with-lower-energies/